Rats' Sensitivity to Their Direction of Movement and Spontaneous Alternation Behaviour

Abstract

The response of rats to their prior direction of movement was examined in three spontaneous alternation experiments. In the first, a straight alley run interpolated between two T-maze trials increased goal arm alternation when it was in the same direction as that of the animal's first T-maze goal arm entry and decreased the alternation tendency when it was in the opposite direction. Experiment II found that multiple runs in one direction in a straight alley increased the likelihood that rats would subsequently enter the goal arm of a T-maze which permitted movement in an opposite direction. In the third experiment, rats entered those goal arms of an eight-arm radial maze which permitted movement in any direction which was different from that during a preceding straight alley trial. The results of these experiments indicate that rats are quite sensitive to their direction of movement and use it as a cue in guiding their behaviour in a variety of experimental situations.